A backfill soil sampling device

Abstract

This utility model discloses a backfill soil sampling device, belonging to the field of backfill soil. Its structure includes a sampling bucket, a fixed shaft at the top of the sampling bucket, a fixed rod at the top of the fixed shaft, a push plate inside the sampling bucket, and a push rod at the top of the push plate. The push rod passes through the sampling bucket, the fixed shaft, and the fixed rod sequentially from bottom to top and connects to a handrail. A groove is formed along the length of the fixed rod on its outer side, the width of which matches the diameter of the handrail. The push rod and the push plate are detachably connected. Several serrated blades are arranged circumferentially at the bottom of the sampling bucket. This utility model's backfill soil sampling device effectively solves the problems of difficult soil extraction and cumbersome cleaning in existing backfill soil samplers, reducing the labor intensity of workers and improving the efficiency of backfill soil sampling and the convenience of subsequent cleaning.

Description

Technical Field

[0001] This utility model relates to the field of backfill soil, and in particular to a backfill soil sampling device. Background Technology

[0002] Backfill soil refers to the soil returned and compacted after the completion of underground works such as foundations in engineering construction. Specifically, it refers to the process of backfilling within 5m after the completion of concealed works such as foundations and subgrades. In engineering quality testing and soil composition analysis, accurate sampling of backfill soil is a crucial step, and the performance of the sampling device directly affects the sampling efficiency, sample integrity, and ease of subsequent cleaning.

[0003] Existing backfill soil samplers typically involve inserting a tube into the soil, then pulling out the tube and using additional tools to remove the soil from inside. However, because soil is generally sticky, it is difficult to completely remove the soil from the tube, which not only easily leads to sample loss and affects the accuracy of test results, but also increases the difficulty of cleaning up after sampling.

[0004] Meanwhile, in order to avoid cross-contamination of soil samples from different areas, the sampler must be thoroughly cleaned after each sampling. However, the existing sampler has an unreasonable structural design, complex component connection methods, and a cumbersome and time-consuming cleaning process, resulting in low overall work efficiency and failing to meet the needs of efficient and continuous sampling in engineering. Utility Model Content

[0005] The technical objective of this utility model is to provide a backfill soil sampling device that addresses the shortcomings of the existing technology. This backfill soil sampling device effectively solves the problems of difficulty in extracting soil and cumbersome cleaning in existing backfill soil samplers, reduces the labor intensity of workers, and improves the efficiency of backfill soil sampling and the convenience of subsequent cleaning.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: it includes a sampling bucket, a fixed shaft is provided at the upper part of the sampling bucket, a fixed rod is provided at the upper part of the fixed shaft, a push plate is provided inside the sampling bucket, a push rod is provided at the upper part of the push plate, the push rod passes through the sampling bucket, the fixed shaft, the fixed rod and is connected to the handrail from bottom to top, a sliding groove is provided on the outer side of the fixed rod along its length direction, the width of the sliding groove is adapted to the diameter of the handrail, the push rod and the push plate are detachably connected, and a number of serrated blades are provided circumferentially at the lower part of the sampling bucket.

[0007] The sampling bucket is provided with a support bucket at the bottom, and the upper surface of the support bucket is provided with a groove that matches the serrated blade at the bottom of the sampling bucket.

[0008] The push rod has an external thread on the outer surface of one end near the push plate, and a tube head is provided at the upper end of the push plate. The tube head has an internal thread that matches the external thread of the push rod, and the push rod and the tube head are detachably connected by the thread.

[0009] A foot pedal is provided on the side of the fixed shaft.

[0010] There are two pedals, symmetrically arranged on the left and right sides of the fixed shaft, and the pedals are rectangular steel plates.

[0011] The saw blade is made of high-strength alloy material.

[0012] Both the sampling bucket and the support bucket are made of stainless steel.

[0013] The serrated blades are evenly distributed around the lower circumference of the sampling bucket.

[0014] Compared with the prior art, the backfill soil sampling device of this utility model has the following outstanding advantages: This invention, by setting a serrated blade at the bottom of the sampling bucket, utilizes the cutting action of the serrated blade to more easily insert the sampling bucket into the soil, effectively reducing the labor intensity of workers and improving sampling efficiency. The pedal located on one side of the fixed shaft allows staff to apply downward force by stepping on the pedal when it is difficult to insert the sampling bucket, without the need for additional tools. This makes the operation simple and convenient, further reducing the difficulty of operation. The sliding groove on the outside of the fixed rod works in conjunction with the handle at the end of the push rod to precisely control the movement of the push plate. When sampling, rotate the handle to make it offset from the sliding groove, and then press down on the handle to push the sampling bucket into the soil. When discharging the sample soil, rotate the handle to align it with the sliding groove, and then press down on the handle to move the push rod and push plate to squeeze out the sample soil in the sampling bucket. The sampling and discharge processes are very convenient. The groove on the support bucket can position and support the sampling bucket. After sampling, the lower part of the sampling bucket is placed into the groove to ensure the stability of the device during sampling and to prevent the sampling bucket from shaking and affecting the discharge of the sample soil. The push rod and push plate are detachably connected by the tube head and thread, and the disassembly process is simple and quick. After sampling, the push rod and push plate can be separated, and the sampling bucket, push rod, push plate and other parts can be cleaned separately. The cleaning is more thorough, avoiding cross-contamination of different samples, and facilitating subsequent resampling of soil in different areas, thus improving the practicality of the device. The overall device has a reasonable structural design, with coordinated components, simple and easy operation, low manual labor intensity, and convenient disassembly. It can effectively solve the problems of existing backfill soil samplers and meet the needs of backfill soil sampling in actual engineering projects. Attached Figure Description

[0015] AppendixFigure 1 This is a schematic diagram of the backfill soil sampling device; Appendix Figure 2 This is a schematic diagram of the backfill soil sampling device after the support bucket has been removed; Appendix Figure 3 This is a schematic diagram showing the connection between the handrail, the fixed rod, the push rod, and the push plate. Appendix Figure 4 yes Figure 1 Enlarged view of a portion of point A in the middle; Explanation of reference numerals in the attached drawings: 1. Sampling bucket, 2. Fixed shaft, 3. Fixed rod, 31. Slide groove, 4. Push plate, 5. Push rod, 6. Handrail, 7. Serrated blade, 8. Support bucket, 81. Groove, 9. Pipe head, 10. Pedal. Detailed Implementation

[0016] Refer to the instruction manual appendix Figure 1 To be continued Figure 4 The following is a detailed description of a backfill soil sampling device according to the present invention.

[0017] This utility model discloses a backfill soil sampling device, the structure of which includes a sampling bucket 1, which is a cylindrical hollow structure with an open end on the lower surface and a fixed connection between the upper surface and the lower surface of a fixed shaft 2 to ensure connection stability. A fixed rod 3 is provided on the upper part of the fixed shaft 2. A push plate 4 is provided inside the sampling bucket 1, the diameter of which is perfectly matched with the inner diameter of the sampling bucket 1 to ensure the sealing between the push plate 4 and the inner wall of the sampling bucket 1, preventing soil leakage from gaps during sampling. At the same time, the soil can be completely pushed out by moving the push plate 4. A push rod 5 is provided on the upper part of the push plate 4, and the push rod 5 passes through the sampling bucket 1, the fixed shaft 2, the fixed rod 3 from bottom to top and is connected to a handrail 6. The fixed rod 3 has a groove 31 along its length on its outer side. The width of the groove 31 is adapted to the diameter of the handle 6, providing guidance for the movement of the components during sampling. When sampling, the handle 6 is rotated to offset it from the groove 31, and the sampling bucket 1 can be pushed into the soil by pressing down on the handle 6. When distributing the sample, the handle 6 is rotated to align it with the groove 31, and pressing down will drive the push rod 5 and the push plate 4 to move and squeeze out the sample. The push rod 5 and the push plate 4 are detachably connected. Rotating the push rod 5 can achieve quick separation or assembly from the push plate 4. The operation is simple and quick, and easy to clean. Several serrated blades 7 are evenly arranged around the lower part of the sampling bucket 1.

[0018] The sampling bucket 1 is provided with a support bucket 8 at its lower part. The support bucket 8 is a cylindrical bucket used to support the sampling bucket 1 and prevent the sampling bucket 1 from shaking during the sampling process. The upper surface of the support bucket 8 is provided with a groove 81 that matches the serrated blade at the lower part of the sampling bucket 1, which can stably embed the lower part of the sampling bucket 1 and ensure the stability of the sampling process.

[0019] The push rod 5 has an external thread on the outer surface of one end near the push plate 4. The upper end of the push plate 4 has a tube head 9. The tube head 9 has an internal thread that matches the external thread of the push rod 5. The push rod 5 and the tube head 9 are detachably connected by the thread.

[0020] The fixed shaft 2 is provided with a pedal 10 on its side. There are two pedals 10, which are symmetrically arranged on the left and right sides of the fixed shaft 2. The pedal 10 is a rectangular steel plate with anti-slip texture on the surface. The staff can step on the pedal 10 to apply downward force to help the sampling bucket 1 insert into the harder soil.

[0021] The saw blade 7 is made of high-strength alloy material. It has good wear resistance and cutting ability, can easily cut into the soil, and reduce insertion resistance.

[0022] Both the sampling bucket 1 and the support bucket 8 are made of stainless steel.

[0023] Operation procedure of the backfill soil sampling device of this utility model: Sampling preparation: Transport the equipment to the backfill soil sampling site and determine the sampling points; Insertion sampling: The staff holds the handrail 6, aligns the serrated blade at the bottom of the sampling bucket 1 with the sampling point, and presses down the handrail 6. The cutting action of the serrated blade is used to gradually insert the sampling bucket 1 into the soil. If the soil is hard, the staff can step on the pedal 10 and apply downward pressure with their body weight to help the sampling bucket 1 enter the soil until the sampling bucket 1 is full of soil. Pull out sampling bucket 1: After sampling is completed, hold the handle 6 and pull out sampling bucket 1 vertically upwards to avoid tilting and causing the sample to spill. Sample discharge: Place the support bucket 8 on a horizontal surface, align the lower part of the sampling bucket 1 with the groove on the support bucket 8, so that the lower part of the sampling bucket 1 is embedded in the groove to achieve stable support; rotate the handle 6 so that its direction is consistent with the sliding groove 31 on the fixed rod 3, press the handle 6 down, and drive the push rod 5 and the push plate 4 to move down synchronously. The push plate 4 pushes the soil in the sampling bucket 1 and squeezes the sample completely into the collection container; Device cleaning: After sampling, rotate push rod 5 to separate push rod 5 from tube head 9 through threads, and then disassemble push rod 5 from push plate 4; clean sampling bucket 1, support bucket 8, push rod 5, and push plate 4 respectively to remove residual soil; after cleaning, reconnect push rod 5 and tube head 9 through threads to assemble the complete device for future use.

[0024] The embodiments listed above are for understanding the present utility model only and are not intended to limit the technical solutions described herein. Those skilled in the art can make various changes or modifications based on the technical solutions described in the claims, and all equivalent changes or modifications should be covered within the scope of protection of the claims of the present utility model. Any aspects not detailed in the present utility model are well-known to those skilled in the art.

Claims

1. A backfill soil sampling device, comprising a sampling bucket, characterized in that: A fixed shaft is provided at the top of the sampling barrel, and a fixed rod is provided at the top of the fixed shaft. A push plate is provided inside the sampling barrel, and a push rod is provided at the top of the push plate. The push rod passes through the sampling barrel, the fixed shaft, and the fixed rod from bottom to top and is connected to the handrail. A sliding groove is provided on the outer side of the fixed rod along its length direction. The width of the sliding groove is adapted to the diameter of the handrail. The push rod and the push plate are detachably connected. Several serrated blades are provided around the lower part of the sampling barrel.

2. The backfill soil sampling device according to claim 1, characterized in that: The sampling bucket is provided with a support bucket at the bottom, and the upper surface of the support bucket is provided with a groove that matches the serrated blade at the bottom of the sampling bucket.

3. The backfill soil sampling device according to claim 1, characterized in that: The push rod has an external thread on the outer surface of one end near the push plate, and a tube head is provided at the upper end of the push plate. The tube head has an internal thread that matches the external thread of the push rod, and the push rod and the tube head are detachably connected by the thread.

4. The backfill soil sampling device according to claim 1, characterized in that: A foot pedal is provided on the side of the fixed shaft.

5. A backfill soil sampling device according to claim 4, characterized in that: There are two pedals, symmetrically arranged on the left and right sides of the fixed shaft, and the pedals are rectangular steel plates.

6. The backfill soil sampling device according to claim 1, characterized in that: The saw blade is made of high-strength alloy material.

7. A backfill soil sampling device according to claim 2, characterized in that: Both the sampling bucket and the support bucket are made of stainless steel.

8. A backfill soil sampling device according to claim 1, characterized in that: The serrated blades are evenly distributed around the lower circumference of the sampling bucket.

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